The survey measured the changes in use and knowledge of insecticide-treated nets (ITNs) since the baseline survey in 2000. The survey sample included women of reproductive age (15-49) who were caring for children under age five from 2,000 Nigerian households. The survey includes households in urban and rural areas from five sites: Lagos, Ibadan, Kano, Maiduguri, and Nsukka. In addition to bednets, the survey covered insecticide use and asks for information on knowledge of malaria.